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IC 1848 (Soul Nebula)


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IC 1848
Soul Nebula (胎児星雲)
Emission Nebula (散光星雲)
OC IV3pn+EN


別名 (Other names)

OCL 364, LBN 667

明るさ (Brightness)
6.5等級

星座 (Constellation)
カシオペア座 (Cas) (Cassiopeia)

距離 (Distance)
6,500光年 (6,500 light-years)

Soul Nebula (IC 1848) is an emission nebula located 6,500 light years from the Earth in the constellation Cassiopeia.

IC 1848 (Soul Nebula) : Picture

IC 1848: The Soul Nebula
IC 1848: The Soul Nebula
(C) Bob Andersson
Stars are forming in the Soul of the Queen of Aethopia. More specifically, a large star forming region called the Soul Nebula can be found in the direction of the constellation Cassiopeia, who Greek mythology credits as the vain wife of a King who long ago ruled lands surrounding the upper Nile river. The Soul Nebula houses several open clusters of stars, a large radio source known as W5, and huge evacuated bubbles formed by the winds of young massive stars. Located about 6,500 light years away, the Soul Nebula spans about 100 light years and is usually imaged next to its celestial neighbor the Heart Nebula (IC 1805). The above image appears mostly red due to the emission of a specific color of light emitted by excited hydrogen gas.

W5: Pillars of Star Formation
W5: Pillars of Star Formation
(C) Lori Allen, Xavier Koenig (Harvard-Smithsonian CfA) et al., JPL-Caltech
How do stars form? A study of star forming region W5 by the sun-orbiting Spitzer Space Telescope provides clear clues by recording that massive stars near the center of empty cavities are older than stars near the edges. A likely reason for this is that the older stars in the center are actually triggering the formation of the younger edge stars. The triggered star formation occurs when hot outflowing gas compresses cooler gas into knots dense enough to gravitationally contract into stars. Spectacular pillars, left slowly evaporating from the hot outflowing gas, provide further visual clues. In the above scientifically-colored infrared image, red indicates heated dust, while white and green indicate particularly dense gas clouds. W5 is also known as IC 1848, and together with IC 1805 form a complex region of star formation popularly dubbed the Heart and Soul Nebulas. The above image highlights a part of W5 spanning about 2,000 light years that is rich in star forming pillars. W5 lies about 6,500 light years away toward the constellation of Cassiopeia.

IC1805 (Heart Nebula)
IC 1848 (Soul Nebula/Left)
IC 1805 (Heart Nebula/Right)
(C) NASA

IC1805 (Heart Nebula) IC1805 (Heart Nebula)
IC 1848 (Soul Nebula/Left)
IC 1805 (Heart Nebula/Right)
(C) NASA
IC 1848 (Soul Nebula /Left)
IC 1805 (Heart Nebula/Right)
(C) NASA
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